X0306 4 2017-12-01 0 0001447599 FITBIT INC FIT 0001642681 CALLAGHAN JON 575 HIGH STREET, SUITE 400 PALO ALTO CA 94301 1 0 0 0 Class A Common Stock 2017-12-01 4 S 0 15000 6.8145 D 1734090 I See footnote Class A Common Stock 22402 I By True Venture Management, L.L.C. The sales reported were effected pursuant to a Rule 10b5-1 plan adopted by the reporting person. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.7200 to $6.9300, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Shares held directly by a family trust controlled by Jon Callaghan. Shares are held directly by True Venture Management, L.L.C., which is controlled by Jon Callaghan and Philip D. Black. The Reporting Person disclaims the existence of a "group" and disclaims beneficial ownership of any securities (except to the extent of such person's pecuniary interest in such securities). /s/ James G. Stewart, attorney-in-fact, for Jon Callaghan 2017-12-03